Exploring the potential of a plant extract in mitigating corrosion under jet impingement conditions

Articles in Press

Document Type : Research Article

Authors

1 Chemistry, Nitte Meenakshi Institute of Technology, Yelahanka, Bengalore

2 Department of Chemical Engineering Manipal Institute of Technology Manipal Academy of Higher Education manipal-Karnataka-India

Abstract

The inhibition effects of Bhumyamalakhi (Phyllanthus Niruri) on 6061 aluminium alloy erosion-corrosion in simulated seawater was explored using potentiodynamic polarisation (PDP) and electrochemical impedance spectroscopy (EIS) techniques. Experiments were performed to examine the hydrodynamic effects on the behaviour of the inhibitor. Conditions were optimised to achieve maximum inhibition efficiency by varying the concentration of inhibitor (500 and 1000ppm), temperature (30 ℃ , 40 ℃ , 50 ℃ ) and flow rate (4, 8, 12 L min-1) of slurry. Surface morphology was studied with scanning electron microscopy (SEM) and energy dispersion X ray (EDX) studies. The experimental findings indicated that increase in flow rate and temperature decreased efficiency of inhibitor and increase in inhibitor concentration caused an increase in inhibitor efficiency. Inhibition efficiency of 80% and 53% was obtained at 30°C and 50° C at 4 L min-1 for 1000ppm of inhibitor. Surface morphology clearly demonstrated the complete damage of the material due to erosion corrosion and surface became relatively smooth after the addition of inhibitor.

Keywords

Main Subjects

Iranian Journal of Chemistry and Chemical Engineering

Articles in Press, Accepted Manuscript
Available Online from 14 June 2023

Files

Share

How to cite

Statistics